North American Fruit Explorers mailing list at ibiblio

[road's end farm <organic101@linkny.com>]

On Jun 27, 2006, at 8:53 AM, Thomas Olenio wrote:

> Hello,
>
> What are good, available natural sources of potassium

I'm not a soil scientist, but here are some possibilities: greensand; granite meal; kelp; wood ash (if you also want to raise pH; also be sure wood ash is not from sources contaminated with heavy metals, etc.)

> and magnesium for  
> plants/trees?
Some types of limestone are high magnesium. Again, this will also raise your pH, of course.

Sul-Po-Mag is high in both and I think is still considered permissible.


--Rivka
Finger Lakes NY; zone 5 mostly